Bundle 4 Prep (Moles)

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance, defined as containing exactly 6.02 x 10^23 particles (atoms, molecules, ions, etc.).

Front

How is the molar mass of a substance defined?

Back

The molar mass of a substance is the mass of one mole of that substance, typically expressed in grams per mole (g/mol).

Front

What is the molar mass of aluminum (Al)?

Back

The molar mass of aluminum is approximately 26.98 g/mol.

Front

What is the molar mass of zinc (Zn)?

Back

The molar mass of zinc is approximately 65.38 g/mol.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass of a compound, sum the molar masses of all the atoms in its chemical formula.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of particles in one mole of a substance.

Front

How many atoms are in one mole of any element?

Back

One mole of any element contains 6.02 x 10^23 atoms.

Front

What is the significance of the mole in chemical reactions?

Back

The mole allows chemists to count particles by weighing them, facilitating stoichiometric calculations in chemical reactions.

Front

What is the relationship between moles and mass?

Back

The mass of a substance in grams is equal to the number of moles multiplied by the molar mass of the substance.

Front

How many molecules are in one mole of a substance?

Back

One mole of a substance contains 6.02 x 10^23 molecules.